If you didn't like the remake don't watch the original because it is very slow moving with alo of talking as some others here have already stated. The story lines are very similar but less action. You will probably not like that one as well.
I hope you're not too disappointed that you were wrong: I liked the old version quite a bit. Same storyline yes, but so much clearer, including the persons' motives for their actions. More time given to absorb things and enjoy pictures instead of rushing with action. Better acting and much more interesting characters. Better photography. Delightful music. About the happy ending I'm not sure - I didn't expect it, when everything else had been so similar storywise. I suppose it was very unrealistic, but then again who doesn't hope for a happy end?